Aarnio about Pastil Chair: "The Pastil shape can be looked at from many angles. The initial idea could be the same as in a Screw Table i.e. the product shape comes from a small sweetie, pastil, but in this case the idea was, that a lot of empty, cushioned space is sent to the other side of the world inside the Ball Chair. A new round chair would fit in this space, and so the diameter of the Pastil is the same as the opening of the Ball Chair.
Because fibreglass is always laminated by hand on a smooth mould the visible surface is perfectly shiny but the other surface slightly rough. I have always wanted to cover or to hide this side of my fibreglass products. In the Pastil it is ideally on the inside and thus totally invisible."